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Finding the Fourth Proportional to 279,796.89, 386,119.11 and 152,472.18

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Solution

The fourth proportional to 279,796.89, 386,119.11 and 152,472.18 is: 210,411.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,796.89 : 386,119.11 = 152,472.18 : x
  2. Step 2: Convert to fraction form
    279,796.89/386,119.11 = 152,472.18/x
  3. Step 3: Cross multiply
    279,796.89x = 386,119.11 × 152,472.18
  4. Step 4: Simplify right side
    279,796.89x = 58,872,422,441.36
  5. Step 5: Solve for x
    x = 58,872,422,441.36/279,796.89
  6. Step 6: Final answer
    x = 210,411.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.